Gfunding-mill



ATEN} FFiCE.

AMBROSE W. STRAUB, OF PHILADELPHIA, PEhlNSYLVANIA.

GRINDING-MILL.

SPECIFICATION forming part of Letters Patent No. 322,400, dated July 14, 1885.

Application filed me 13, 1883. unmet 5 State of Pennsylvania, have invented certain new and useful Improvements in Grinding- Mills, of which the following is a specification, reference being had therein to the accom panying drawings, wherein- Figure l is aperspective of a grinding-mill embodying my invention. Fig. 2 is a broken longitudinal vertical section of same, drawn to an enlarged scale. tion of feed-tube and cutters for cobs of corn. Fig. 4 is a broken elevation, partly sectional,

of feed-shoe, damsel, and operating mechanism. Fig. 5 is a sectional view of modified form of bearing or box for the end of the spindle and of oiling mechanism therefor.'

Figs. 6 and 7 are respectively elevations of 'a revolving and a non-revolving cast-metal or other buttonilwhich serve as oiling devices for the end of t e spindle. Fig. Sis a broken elevation of a modification of seat or ring for 5 the bedestone, and Fig. 9 is abroken detail section. t

I My invention has reference to the grinding- @mill-ffor which United States Letters Patent ,wereissuedto me on the 27th day of June,

1 construction. of the mill-caseyto provide the bed-stone witha universal joint and means 18 82, and-has-fonits objects to improve the for preventing it rotating ;'to provide the feedshoe' with afnoiselessly-acting damsel 5 an inclineli chute boardfor the bottom exit-opening of the mill-case, a-self-oiling' button for the lubrication of themill spindle. or journal, and an improved feed-trough for the corncob cutters, whereby a better, more effective durable, and inexpensive mill is produced, the parts of which are more readily and quickly secured together and removed from one am other-to gain access to the grinding plates or disks, for repairs or other purposes.

5' My invention accordingly consists of the ".wnovel combinations, constructions, and arrangements of parts; as here nafter more par- 'ticularly described and claimed.

' In the drawings, A represents the mill-castions, or a, bolted together at 01. and provided with one or more lateral exit-openings, a and Fig. 3is a detail sec ing, which is composed of two halves or seca bottom opening, 0.". These openings are provided with removable or slip covers a), (more plainly shown in Fig. 9,) which are made of tin or sheet metal, so that they may be closed when the ground chop or other material is not discharged therethrough. In Fig. 1 the vided with a bearing, a, for the spindle G, and

c is another or end bearing therefor formed on the section a.

vide a clearance for the cani or eccentric D, secured to the spindle O.

v E represents a conical sleeve firmly attached to the spindle, so as to revolve therewith.

Saidsleeve carries the cob-cutting knives e e and a flange, E, to which is' bolted the running stone or disk G. Upon the interior wall of the section a is an annular'flange, F, having a turned concave seat, f, for the finished, beaded, or rounded edge h of the tramming-ring H, to which is bolted the bed-stone orfl disk G, as plainly shown in Fig.2. r

I represents the tramming-scrcws for ring H, of which there may be three or more, as ,desired. They pass through openings '6 in the end of section a, and are provided with rubber or elastic washers i and jam-nuts 01. By adjusting the latter the ring His trammed to cause the disk Gtoline with the disk G,

while the provision of ,the elastic washerst and the universal joint or rounded seat of ring H permits the latter and disk G toyield'in every direction to the disk G under the varying grinding-pressures; hence their grindingfaaes are always in perfect linewith each ot er.

K represents the feed-tube for thecoriv cobs, which is bolted or otherwise secured to the section a, and inclines backwardly there from. erally-inclining side, k,"(see Fig. 3,) to cause the cobs of corn to feed into the mill on the The bearing a is cut away! at 0 as more plainly shown in Fig. 4, to pro-- Said feed-tube is provided with a lat downward cut of the knives e e, and the latter act to further draw or feed the cobs downward at every cut.

The bearing 0 is provided with a hinged bridge-tree, L, which carries a temper-screw and jam-nut, l and 1, respectively. Said screw abuts against a metallic but-ton, M, which in turn impinges against the end of shaft 0, so that by adjusting said screw the degree of fineness of the grinding may be varied as desired. The lower end of said bridge-tree is secured to a plate or other spring, N, attached to the base B by a screw, it, and jam-nut a. By adjusting the latter the tension of the spring N is varied to provide a more or less yielding bridge-tree, L, for the spindle 0. The button M revolves with said spindle, and is formed with a central aperture, m, and one or more diametrical grooves, m; Said button rotates within an oil-well, 0, formed in the box or bearing 0, as shown in Fig. 2, so that, as the button revolves, a suction is created in the aperture m and that part ofthe groove m covered by the end of the spindle, to raise the oil from well 0 through said groove and to said aperture, from whence it gradually finds its way along the spindle to bearing 0 and lubricates said parts.

P represents a bail or holder for the hopper P, which is provided with a suitable cut-ofl' valve, p. The hail P is bolted to the casing, as shown, and has a socket, p,as indicated in Fig; 2, for the pivot r of the shaker or feedshoe R, the end r of which projects into the tube K. The opposite end of said shoe is formed with a stud, 1, which is embraced by the upper ends of bars S S. Une of the latter is riveted to a block, T, pivoted at t to the section a, and the other bar S is bolted to said block, as shown at at, Fig. 4:. Said bars extend downwardly until their lower ends enter the cut-away portions 0 c of bearing 0, and embrace the eccentric D. The bars S S, therefore, form the damsel for the shoe R, and by adjusting the bolt a: said bars are drawn toward each other until their lower ends loosely clamp the eccentric D, and their upper ends tightly hug the stud r of shoe R, the result whereof is, that there is no lost motion between the movement of the feed-shoe and the damsel. Consequently as the eccentric D rotates it noiselessly oscillates the damsel and feedshoe. l

If desired, the bearing 0 may be arranged as shown in Fig. 5, wherein it is provided with a stopple, y, forlclosing an opening in the top of bearing 0, through which, oil is supplied to the wellO, and the bridge-tree or end L is fixed or unyielding.

Between the button M and the screw 1 is interposed another button, V, which is stationary, and is provided with a tubular leg, M, which extends down into the oil-well O, and through'ijzhich oil is sucked up to the button M, and thence to the shaft 0, as above described.

Any tendency of the button V to rotate is said button as it revolves.

season checked by the impingement of its tube 10 against the sides of well 0, it being made small enough laterally to prevent such rotation.

If desired, the spring N may be dispensed with, and the bridge-tree L connected at its lower end to the bearing 0 by a wooden pin, 2, as shown in Fig. 2, so that when by accident a nail or other hard foreign substance passes between the grinding disks the resultant undue pressure will cause the wooden pin to break and permit the bridge tree to yield to effect a separation oi said dis'ksand allow such substance to pass out from between the same without injuring their grinding-surfaces. Said disks may be of any suitable material or have any desired dress; but I prefer to construct and dress them as shown and described in my said patent. When said ring H is provided with the tramming-screws I, the latter also serve asa means 0 prevent the disk G from rotating; but when said screws are not used the ring H is formed with lugs h and the casing with lugs k Between the latter are located the lugs h, when the ring H is upon its seat, as shown in Fig. 8, and thereby retain said ring in such position that it and the disk G cannot revolve, although perfectly free to move laterally from the seat f.

I have described that the oil is fed to the journal through: the grooves m by suction; but in addition thereto it is obvious that the grooved sides of the button M collect oil which is by centrifugal force thrown cit-of Such oil is thereby deposited upon the journal or on the sidesef its box, from whence it finds its way to the spindle or journal.

What I claim is 1; The grinding-mill casing A, composed of sections a or, having lateral and bottom exitopenings, a a, shaft-bearings c a, the baseplate B, and an inclined chute or plate, I), interposed between base B stantially as shown and described.

2. A grinding-mill casing composed of sections or a, having shaft-bearin gs c c, exitopenand opening a, subings a a, slip or removable covers a for said openings, base-plate B, and inclined chute 12, substantially as shownand described. I

3. in a grinding-mill, the combination of I casing-section a, having central spindle-openiing, with inwardlyprojecting annular flange F and seat f, ring H, having beaded eye-edge h, bed-stone G, and'trammingscrews L secured. to plate H and extending through the wall of section a, substantiallyas shown and described;

4. The combination of easing A, composed of sections a a, having bearings c c, spindle 0, conical sleeve E, and cutters e, and the rearwardly-incliningfeed-trough K, having laterally-inclining side It, substantially as shown and described.

5. The combination of casing A, having shaft-bearings 0 c, bedstone G, the feed-tube K, spindle O, conical sleeve E, provided with cutters e and flange or plate E, and attached running-stone G, substantially as shown and described.

6. The combination of easing A,having feedtube K, journal-bearings c c, and exit-openin gs, the axially-yieldiug non-rotating bedstone G, the spindle C, sleeve E, provided with cutters c and plate E, and the runningstone G, substantially as shown and described. 7. The combination, with casing A, grindin gdisks G G, shaft 0, and eccentric D, of apivoted feed-shoe having a stud, r ,a pivoted damsel between said stud and eccentric, and an adjustable device for clamping the damsel tightly to said stud and loosely to said eccentric, substantially as shown and described.

' 8. In a grinding-mill, the combination of a feedshoe, a spindle having an eccentric or cam, a pivoted damsel composed of two bars having open or separated ends, and an adjust ing-screw for clamping one of said ends to the feed-shoe and the other to the spindle cam or eccentric, substantially as shown and described.

9. The combination of casing A, bail I, having socket p, the feed-shoe R, having pivot r and stud T the bearing 0, cut away at c 0 m and groove m spindle G, eccentric D, and pivoted clampingbars S S, substantially as shown and described. 0 10. In a grinding-mill, the combination of spindle O and bearing 0, having hinged or pivoted bridge-tree L, provided with temperscrew Z, jam-nut 1, spring N, and tension devices n and a, substantially as shown, and 35 7 described. p i 11. In a grinding-mill, the combination of a casing, A, having a fixed grinding-disk and a bearing, 0 provided with temper-screw Z and oil-well O, spindle 0, having rotary grinding-- o disk, and an oiling-button,M,having aperture in oil-well O, and adapted to the end of spindle O, as and for the purpose set forth. p

12. In a grinding-mill, a damsel composed 5 of a pivoted block, a fixed and a loose bar, and an adjusting device for moving the loose bar to and from the fixed bar, substantially as and for the purpose set forth.

In testimony whereof I aflix my slgnature 50 in presence of two witnesses.

AMBROSE W. STBAUB.

Witnesses:

S. J. VAN STAVOREN, CHAS. F. VAN HORN. 

